When the season finales begin to air, then you know that it’s only a matter of time before the network upfront presentations begin. If you’re not familiar with the concept of the upfront, it’s when the networks formally roll out their fall schedules, providing advance warning about the slate of new programming for the next season, thereby allowing for several months of snarky comments about series which no one has even seen yet. Give credit to NBC, though: they’ve actually offered up clips for virtually every one of their new shows in order to get the buzz going as quickly as possible…be it positive or negative. Check out what they’ve got to offer, then let us know what you think!

MONDAY

8 – 9 PM: Chuck

9 – 10 PM: The Event: an emotional, high-octane conspiracy thriller that follows Sean Walker (Jason Ritter, “The Class”), an Everyman who investigates the mysterious disappearance of his fiancée, Leila (Sarah Roemer, “Disturbia”), and unwittingly begins to expose the biggest cover-up in U.S. history. Sean’s quest will send ripples through the lives of an eclectic band of strangers, including: newly elected U.S. President Martinez (Golden Globe nominee Blair Underwood, “In Treatment”); Sophia (Emmy Award nominee Laura Innes, “ER”), who is the leader of a mysterious group of detainees; and Sean’s shadowy father-in-law (Scott Patterson, “Gilmore Girls”). Their futures are on a collision course in a global conspiracy that could ultimately change the fate of mankind. Ian Anthony Dale (“Daybreak”) and Emmy winner Željko Ivanek (“Damages”) also star in the ensemble drama. Stark (“Medium,” “Facing Kate”) serves as executive producer, Evan Katz (“24”) serves as executive producer/showrunner, Nick Wauters (“The 4400,” “Eureka”) is creator/co-executive producer and Jeffrey Reiner (“Friday Night Lights,” “Trauma”) is the director/executive producer.

10 – 11 PM: Chase: a fast-paced drama that drops viewers smack into the middle of a game of cat-and-mouse as a team of U.S. marshals hunts down America’s most dangerous fugitives. Kelli Giddish (“Past Life”) stars as U.S. Marshal Annie Frost, a cowboy boot-wearing deputy whose sharp mind and unique Texas upbringing help her track down the violent criminals on the run. Cole Hauser (“K-Ville”), Amaury Nolasco (“Prison Break”), Rose Rollins (“The L Word”) and Jesse Metcalfe (“Desperate Housewives”) also star as members of Frost’s elite team. Jerry Bruckheimer (“CSI” franchise, “The Amazing Race,” “Pirates of the Caribbean” films), Jonathan Littman (“CSI” franchise, “The Amazing Race,” “Cold Case”) and Jennifer Johnson (“Cold Case”) serve as executive producers, while KristieAnne Reed is co-executive producer. David Nutter (“The Mentalist,” “Without a Trace” “The X-Files”) directed and is executive producer of the pilot, which was written by Johnson.

It’s 2-for-1 day with the upfronts, with NBC following ABC in announcing their fall schedule. The National Broadcasting Company was already in a crap ratings position even before they decided to try the radical maneuver of giving Jay Leno the 10 PM timeslot, so they really can’t lose very much by trying such an experiment. It still sucks for fans of scripted television, though. Fortunately, the people at the Peacock have still found it in their heart to offer up a few new series, and they’re also trying the shared-timeslot concept in earnest, as you’ll see below.

Monday

8:00 PM – Heroes

9:00 PM – Trauma

From executive producer Peter Berg comes the first high-octane medical drama series to live exclusively in the field where the real action is. Like an adrenaline shot to the heart, the show is an intense, action-packed look at one of the most dangerous medical professions in the world: first responder paramedics. When emergencies occur, the trauma team from San Francisco General is first on the scene, traveling by land, by sea or by air to reach their victims in time. From the heights of the city’s Transamerica Pyramid to the depths of the San Francisco Bay, these heroes must face the most extreme conditions to save lives — and give meaning to their own existence in the process. Starring are Derek Luke, Cliff Curtis, Anastasia Griffith, Aimee Garcia, Kevin Rankin, and Jamey Sheridan.

10:00 PM – The Jay Leno Show

Tuesday

8:00 PM – The Biggest Loser
10:00 PM – The Jay Leno Show

Wednesday

8:00 PM – Parenthood

From the executive producers of the box-office hit “Parenthood,” Ron Howard and Brian Grazer, and writer/executive producer Jason Katims, this contemporary re-imagining of the blockbuster film depicts the colorful and imperfect Braverman family – four grown siblings sharing the headaches, heartaches, and joy of being parents. The star-studded cast includes Peter Krause, Maura Tierney, Craig T. Nelson, Dax Shepard, Bonnie Bedelia, Monica Potter, Erika Christensen and Mae Whitman. When Sarah Braverman (Tierney), a financially strapped single mother, returns home to her parents and siblings in Berkeley, Calif., after packing up her Fresno apartment and uprooting her two inconvenienced kids, Amber (Whitman) and Drew (Miles Heizer), she is greeted by her opinionated father, Zeek (Nelson), and strong mother, Camille (Bedelia), who are privately dealing with their own marital issues. As Sarah is reunited with her siblings — sister, Julia (Christensen), and brothers Crosby (Shepard) and Adam (Krause) — all struggling with issues of their own, it’s clear that the Braverman reunion is just what they need to face the everyday challenges of modern family life.